GALVESTON - After a dog allegedly attacked their twin daughters at a Friendswood park almost two years ago, local residents James and Melissa Thompson seek legal action.

A lawsuit filed April 25 in Galveston County District Court claims a boxer belonging to Friendswood locals Erica and Abid Quraishi injured Olivia and Isabella Thompson at Stevenson Park on May 1, 2011.

The elder Thompsons say Olivia went to pet the canine in question, which was tied to a tree, when the assault allegedly occurred.

Olivia then turned around only for the dog to "suddenly and unexpectedly attack her," the original petition claims.

The lawsuit states that Isabella, her identitical twin, witnessed the event and sustained injuries as well.

The girls' parents assert the defendants knew their dog presented a danger, faulting them for failing to control it and for permitting it to come into contact with minors.